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Resolve Issue #25: virtio: generalize io_barrier/platform_iommu

Should the TC accept changes listed in the description to resolve issue 25, for inclusion in specification version(s) "virtio-v1.1-cs01", and future versions of the specification?

Please vote Yes if you agree with all of the following.
If you disagree, please vote No.
If you don't have an opinion, please vote Abstain.

I move that:
The TC agrees to resolve the following specification issue:
Issue #25: virtio: generalize io_barrier/platform_iommu
it isn't always clear to everyone when should device set
platform_iommu and when io_barrier.
for example, some platforms need tricks like flushing cache
and this is in practice already covered by platform_iommu.
Let's rename platform_iommu to access_platform
and make it clear that with this flag which memory
can be accessed and at what address is platform specific,
without this flag device acts same as CPU.

On the other hand, io_barriers is a confusing name as it is not clear
which operations are meant by an barrier - it is not
really the io that is ordered. Rename it to order_platform.
barriers is just one possible implementation of a driver
used to order accesses.

See more motivation here:

The TC accepts the following proposed changes to the specification:

The TC agrees to include the above change(s) in specification version(s) "virtio-v1.1-cs01", and future versions of the


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 [ ]  Yes
 [ ]  No
 [ ]  Abstain
Opening:   Tuesday, 27 November 2018 @ 01:15 am EST
Closing:   Tuesday, 4 December 2018 @ 01:15 am EST
Group:   OASIS Virtual I/O Device (VIRTIO) TC
Ballot has closed.

Referenced Items
Name Type Date Action

Voting Details

Voting Summary

Options with highest number of votes are bold

Option # Votes % of Total
Yes 6 100%
No 0 0%
Abstain 0
Eligible members who have voted: 6 of 6 100%
Eligible members who have abstained: 0 of 6 0%
Eligible members who have not voted: 0 of 6 0%

Voting Details

Voter Company VoteReference Document and/or Comment
Halil Pasic
Mihai Carabas
Michael S. Tsirkin
Red Hat
Stefan Hajnoczi
Red Hat
Cornelia Huck
Red Hat
Jan Kiszka
Siemens AG